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Don’t Be Prey

Jeff Tseng | 2026 | 94 MINS
Australia
Focus on the Documentary

Discover: Australia

An edge-of-your-seat adventure into one man's fight to reclaim his life by taking on the world's most dangerous marathon swims, the Oceans Seven.

In Detail

Across five continents and seven of the world’s most brutal channels, Australian swimmer Mark Sowerby takes on the Oceans Seven, an ordeal as unforgiving as Everest, but in open water.

No cage. No wetsuit. No escape. Just man against Mother Nature. Over a decade of relentless pursuit, from the icy Irish Sea to the shark-patrolled waters of Hawaii, Mark pushes human endurance to its limits. What unfolds is not only a quest for survival but a profound journey of resilience and healing. Featuring unforgettable characters, raw vulnerability and breathtaking ocean feats, it's a gripping, uplifting journey of resilience, reinvention and what it really takes to survive.

With support of the BFI Film Audience Network,
awarding funds from the National Lottery in order to
bring this project to more audiences across the UK.

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